Write Pulse

{
  "public": {
    "Sr25519": "0x1a005e90a3e6a3dfe9288ab1201eb4b95be88b5ac1b18cd1f8a8eaefceef094a"
  },
  "pulses": [
    {
      "round": "25,581,493",
      "signature": "0xb298c6b3de120a0287ffb32167405ac0bad730aabb9226b61de20bc23227c96ac65036f1fd42bb01e5be2abec99f7631",
      "randomness": "0xa2776331decffbd000efc509d6402df0920ea39e8615f3481abed48cce076f79"
    }
  ],
  "blockNumber": "7,415,696"
}

{
  "Sr25519": "0x30414a2ca2cdac16f0f2f03b5f2a81192d09578032d22e0639dd2a473c277254285ea0099e4db7398be99521c8f1f8ebefdc1e32fdf0bd6f0498a930e3916d88"
}